Episode 6: Marble Roll

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Marble Roll

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Norm considers a historic example of the classic marble roll, as well as a huge mechanical version located at Boston's Museum of Science. His own design emphasizes safety, proportioned for marbles too large for a child to swallow, while the entire unit i

Norm considers a historic example of the classic marble roll, as well as a huge mechanical version located at Boston's Museum of Science. His own design emphasizes safety, proportioned for marbles too large for a child to swallow, while the entire unit i